Punnett Squares

Which of these is Homozygous Dominant

• Rr

• RR

• rr

Which of these is homozygous recessive?

• Rr

• RR

• rr

If the dominant trait is having freckles (F) and the recessive trait is no freckles (f), which allele combination(s) below would represent a person who has freckles? (select all that apply)

• FF

• Ff

• ff

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the phenotype of the offspring? (A-Brown hair; a-blond hair) 

• 50 % Brown Hair and 50% Blond Hair 
• 25 % Brown Hair and 75% Blond Hair 
• 75 % Brown Hair and 25% Blond Hair 
• 0% Brown Hair and 100% Blond Hair 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The combination of genes a person has, represented by letters, is their...

• Genotype

• Phenotype

• Chromosome

• Punnett Square

What belongs in the last box?

• RR

• Rr

• rr

• ff

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt
• Tt
• Bb
• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Look at the punnett square shown. What allele pair would replace the "?"

• WW

• Ww

• ww

Tags

NGSS.HS-LS3-1

Both parents in this Punnet square

• are homozygous dominant
• are homozygous recessive
• are heterozygous
• have blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Fill in the Yellow Box

• Bb

• BB

• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2